تأثير المبيدات الكيمياوية و مواعيد رشها و التداخل بينهما في مكافحة القصب البري (Phragmites communis Trin.)‎

الملخص EN

Common reed {phragmites communis trin).

growing in drainage canals at abu-Ghraib, Baghdad was treated with glyphosate, dalapon, msma, cacodylic acid, prometryn, paraquat, dalapon + paraquat and glean, at rates of 8 l, 24 kg, 8 l, 12 l, 3 kg, 4l, 12 kg + 2l, and 113 gm, a.i / ha, respectively.

herbicide treatments were conducted at three dates of application, July 25, October 25 and April 25.

the herbicide treatments were repeated at the same rate, six weeks after each date.

the results obtained showed that glyphosate and dalapon were the most effective herbicides on common reed for long run, but 24 weeks after applications, glyphosate was the best.

the results indicated also, that the effects of dates of application were significant.

interaction effects between herbicides and dates of application was significant, on certain period after applications, but it was not so on others.

it was concluded that the environment has a significant effect on herbicide activity and the best date of applications leads to the best results.